docs(P00): personas + plan — v1.27 (lead-developer only, 3 phases)

PERSONAS: lead-developer active (docs/chore milestone); 5 others
inactive. Territory: .ciagent/, docs/.

PLAN: 3 phases (P1 author-archive, P2 fix-stale-wire, P3 final-review-ship).
Tags on v1.26.x; v1.26.3 = milestone release.

Archive-list correction (D-219 refinement): the 4 pre-execution files
(CLARIFY/GRILL/IDEATE/RESEARCH) were rewritten in P0 with v1.27
content — the v1.26-era content lives in git history. The v1.27 P0
versions stay active through v1.27 (current pre-execution record);
they archive at v1.28 P1 if v1.28 happens. Final archive list: 7
platform files (CAPABILITY_INVENTORY, REVIEW-AUDIT-P05, VERIFY-P03,
VERIFY-P04, P4-PILOT-RUN-EVIDENCE, AUTONOMY_THESIS, COST) + 1
consumer file (nova-blockchain-exchange/ROADMAP) = 8 files.

---ci---
project: acdl
phase: 0
milestone: v1.27
status: plan
---ci---

.ciagent/CHECKPOINT.json

@@ -1,6 +1,6 @@
 {
   "phase": 0,
-  "stage": "clarify",
+  "stage": "research",
   "milestone": "v1.27",
   "phase_role": "pre_execution",
   "attempts": 0,